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223 lines
8.8 KiB
223 lines
8.8 KiB
//odtParser.java
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//------------------------
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//part of YaCy
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//(C) by Michael Peter Christen; mc@yacy.net
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//first published on http://www.anomic.de
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//Frankfurt, Germany, 2005
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//
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//this file is contributed by Martin Thelian
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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//This program is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//
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//This program is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//
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//You should have received a copy of the GNU General Public License
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//along with this program; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.document.parser;
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import java.io.File;
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import java.io.InputStream;
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import java.util.Enumeration;
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import java.util.HashSet;
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import java.util.Set;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.parsers.SAXParser;
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import javax.xml.parsers.SAXParserFactory;
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import net.yacy.cora.document.UTF8;
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import net.yacy.document.AbstractParser;
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import net.yacy.document.Document;
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import net.yacy.document.Parser;
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import net.yacy.document.parser.xml.ODContentHandler;
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import net.yacy.document.parser.xml.ODMetaHandler;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.io.CharBuffer;
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import net.yacy.kelondro.logging.Log;
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import net.yacy.kelondro.util.FileUtils;
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import org.xml.sax.SAXException;
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public class ooxmlParser extends AbstractParser implements Parser {
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public ooxmlParser() {
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super("Open Office XML Document Parser");
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this.SUPPORTED_EXTENSIONS.add("docx");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.wordprocessingml.document");
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this.SUPPORTED_EXTENSIONS.add("dotx");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.wordprocessingml.template");
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this.SUPPORTED_EXTENSIONS.add("potx");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.presentationml.template");
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this.SUPPORTED_EXTENSIONS.add("ppsx");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.presentationml.slideshow");
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this.SUPPORTED_EXTENSIONS.add("pptx");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.presentationml.presentation");
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this.SUPPORTED_EXTENSIONS.add("xlsx");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
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this.SUPPORTED_EXTENSIONS.add("xltx");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.spreadsheetml.template");
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}
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private static final ThreadLocal<SAXParser> tlSax = new ThreadLocal<SAXParser>();
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private static SAXParser getParser() throws SAXException {
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SAXParser parser = tlSax.get();
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if (parser == null) {
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try {
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parser = SAXParserFactory.newInstance().newSAXParser();
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} catch (ParserConfigurationException e) {
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throw new SAXException(e.getMessage(), e);
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}
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tlSax.set(parser);
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}
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return parser;
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}
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private Document[] parse(final DigestURI location, final String mimeType, @SuppressWarnings("unused") final String charset, final File dest) throws Parser.Failure, InterruptedException {
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CharBuffer writer = null;
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try {
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String docDescription = null;
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String docKeywordStr = null;
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String docShortTitle = null;
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String docLongTitle = null;
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String docAuthor = null;
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String docLanguage = null;
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// opening the file as zip file
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final ZipFile zipFile= new ZipFile(dest);
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final Enumeration<? extends ZipEntry> zipEnum = zipFile.entries();
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// looping through all containing files
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while (zipEnum.hasMoreElements()) {
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// get next zip file entry
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final ZipEntry zipEntry= zipEnum.nextElement();
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final String entryName = zipEntry.getName();
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// content.xml contains the document content in xml format
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if (entryName.equals("word/document.xml")
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|| entryName.startsWith("ppt/slides/slide")
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|| entryName.startsWith("xl/worksheets/sheet")) {
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// create a writer for output
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writer = new CharBuffer(odtParser.MAX_DOCSIZE, (int)zipEntry.getSize());
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try {
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// extract data
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final InputStream zipFileEntryStream = zipFile.getInputStream(zipEntry);
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try {
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final SAXParser saxParser = getParser();
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saxParser.parse(zipFileEntryStream, new ODContentHandler(writer));
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// close readers and writers
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} finally {
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zipFileEntryStream.close();
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}
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} finally {
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writer.close();
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}
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} else if (entryName.equals("docProps/core.xml")) {
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// meta.xml contains metadata about the document
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final InputStream zipFileEntryStream = zipFile.getInputStream(zipEntry);
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final SAXParser saxParser = getParser();
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final ODMetaHandler metaData = new ODMetaHandler();
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saxParser.parse(zipFileEntryStream, metaData);
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docDescription = metaData.getDescription();
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docKeywordStr = metaData.getKeyword();
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docShortTitle = metaData.getTitle();
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docLongTitle = metaData.getSubject();
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docAuthor = metaData.getCreator();
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docLanguage = metaData.getLanguage();
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}
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}
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// make the languages set
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final Set<String> languages = new HashSet<String>(1);
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if (docLanguage != null && docLanguage.isEmpty())
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languages.add(docLanguage);
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// if there is no title availabe we generate one
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if ((docLongTitle == null || docLongTitle.isEmpty()) && (docShortTitle != null)) {
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docLongTitle = docShortTitle;
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}
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// split the keywords
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String[] docKeywords = null;
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if (docKeywordStr != null) docKeywords = docKeywordStr.split(" |,");
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// create the parser document
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Document[] docs = null;
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final byte[] contentBytes = UTF8.getBytes(writer.toString());
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docs = new Document[]{new Document(
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location,
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mimeType,
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"UTF-8",
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this,
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languages,
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docKeywords,
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docLongTitle,
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docAuthor,
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"",
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null,
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docDescription,
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0.0f, 0.0f,
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contentBytes,
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null,
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null,
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null,
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false)};
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return docs;
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} catch (final Exception e) {
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if (e instanceof InterruptedException) throw (InterruptedException) e;
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if (e instanceof Parser.Failure) throw (Parser.Failure) e;
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// close the writer
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if (writer != null) try {
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writer.close();
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} catch (final Exception ex) {/* ignore this */}
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Log.logException(e);
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throw new Parser.Failure("Unexpected error while parsing odt file. " + e.getMessage(),location);
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}
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}
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@Override
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public Document[] parse(final DigestURI location, final String mimeType, final String charset, final InputStream source) throws Parser.Failure, InterruptedException {
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File dest = null;
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try {
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// creating a tempfile
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dest = File.createTempFile("OpenDocument", ".odt");
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dest.deleteOnExit();
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// copying the stream into a file
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FileUtils.copy(source, dest);
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// parsing the content
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return parse(location, mimeType, charset, dest);
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} catch (final Exception e) {
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if (e instanceof InterruptedException) throw (InterruptedException) e;
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if (e instanceof Parser.Failure) throw (Parser.Failure) e;
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throw new Parser.Failure("Unexpected error while parsing odt file. " + e.getMessage(),location);
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} finally {
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if (dest != null) FileUtils.deletedelete(dest);
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}
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}
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}
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